td-ttu-15.00_for_Windows correctly installed but now how do i create a database

td-ttu-15.00_for_Windows correctly installed but now, how do i create a database? If i tried to reach to my office teradata server it fails i guess that would be some kind of firewall does not it? so if I am not able to reach or download a demo database in which practice the basic comands how can i create my own database for first time?